Method of concealing defects in a surface



Patented Dec. 22, 1953 METHOD OF CONCEALING DEFECTS IN A SURFACE Alfred E. Kowall, Westchester, 111., assignor of one-half to Edward A. Kirwin, Wilmington,

No win pplication November 21, 1951.

Serial No. 258,531

3 Claims.

This invention relates to an improved patching composition and to a method of making and using such composition and has for an object to provide an improved composition to be usedas a patching material for filling minor defects such as scratches, cracks and nail holes in a surface that is to be painted with a fiat finish, water or oil paint, which improved composition may be applied to the defect in a wet plastic condition and then may be painted over immediately without first having to wait until the patch is dry, and the patch will be completely concealed and become a part thereof beneath the covering paint thereover.

A further object of this invention is to provide a patching material that is self sealing and produces a smooth surface. The patch does not require sanding when itis knifed in clean or smoothed over with what painters call a dry brush, that is a brush that has been dipped in paint and then had most of the paint worked out of it. The patch may be painted over while still wet to produce a smooth finish surface wherein the defect or patch will not be visible or burn through or bleed through the covering paint after the covering paint has dried.

Still a further object of this invention is to provide an ingredient for a patching composition which is very inexpensive to manufacture and transport in a compact powdered form to wherever it is to be put in use and which may be easily and readily mixed by the painter just before it is to be used on the job.

A further object of this invention is to provide a patching composition that will not discolor or paint that is being used to paint the surface at the time.

Yet a further object of this invention is to provide a process for concealingminor defects in a wall beingpainted by knifing in or filling the defect with a thick paste or putty like composition consisting of a composition of common mica, neutral or light colored, and ground to a suitable mesh of between 160-180 or better mixed with a binder consisting of the particular paint or liquid material being used to paint or finish the wall with.

The essential featureof this invention is that it consists of a material in a dry powdered form which may be stored indefinitely and transported easily, and which is mixed on the job as needed,

and then may be applied to the surface defect to provide a smooth finish surface which may be painted over immediately while it is still wet, and then when the covering paint has dried, neither the patch nor the outlines of the defect will be visible through the dried paint either then or a later time, and will be at patch that requires no sanding if knifed in clean or brushed over lightly as in the manner mentioned above.

In putting this invention into use, it will be understood that it will always mix to its desired consistency by blending it with the same liquid material or paint that will be used to cover or paint the surface after the patching has been completed. The liquid material should never be thinner than the liquid material that will be put burn through the covering paint thereover even though the covering paint is placed over the patch while the patch is still wet irrespective of whatever color the paint is, and is thus an improvement over present known compositions for this purpose which usually must dry completely and then be given a coating of sealer that must also thoroughly dry before it can be painted over. This invention eliminates this loss of time by putting the patching composition over the defect and covering it with a finishing paint, and with this invention, the patch will be invisible after the finishing or covering paint has dried.

Still a further object of this invention is to provide an improved patching composition which is used in the form of a thick paste or putty like consistency which may be painted over immediately while it is still wet, and wherein the binder for the paste or putty like composition consists of whatever liquid finish or flat finish between 160-180 or better.

' last several days can on the surface, preferably straight from its container whenever possible for best results. The powdered material consists of .common mica, a mineral, which has been ground to a fineness of In order that the powdered mica may be usable with any color paint or finish, it is preferably always a neutral or light colored mica so that it can be mixed with both light or dark colors.

Another feature of this composition that has the advantage over present day compositions used for this purpose is when used on jobs where a large number of rooms are usually painted using the same color. An amount sufficient to be made without fear of it going to waste. It may have a tendency to thicken in body the next day after it is mixed which is due to evaporation of the thinner that is in the binder it was mixed with. However, it can be rejuvenated or brought back by adding a little of the same liquid material that was used for its binder originally and working it under a broad knife or a putty knife or putting it in a 3 container such as a tin can and stirring it up with a stick.

The mica for this purpose will be ground to a fine powder 01' at least about lfip lw nesh and then stiita blyifiabk lge'd for storag iaflid' tra ns portation with instructions that in-order to use the same as a patching composition, it should be mixed with the particular paint or liquid material that is being used t04pl1ntEi5r flffiSh' -fh wall with. Then, the painter at the job following the instructions will add a suflici enthquantity of whatever flat finish paint? i'quid' finishilie is covering the wall withto'f's it'itbleizi tity of the powdered mica to make a thick paste or putty-like composition or to the coiisistencyrmost suitable for his purpose, then he will mi -m me minor cracks or defects in the wall with thi s composition, knifing it; in as custoniary and s q i l .V fi 1 th 51 i 59 "for' a p atc'h"thativill rfot rqnire rid then without havingto wait for it to dry r"to cover it w ith" a, "s alef 'after -it is *jdry, he merely tinu's with his "fin ti g 'operatioh reverie-g evr tue pa c'h dtvill hat ea pemcexfiismqu" 4 be understood that this invention is not restricted except as may be required within the scope of what is hereinafter claimed.

Iiaving thus set forth and disclosed the nature 5 inf-this; inventioh; what is name-g1 is:

"'1; Theqirocessof concealing minbrdefects in a surface being covered with a flat finish of oil "or water base paint consisting of first covering 'therdefectvwith' a thick paste consisting of com- 1'0" 'riion ground mica mixed with a suificient quantityofthe particular covering paint, and there- "1 afteriapplying thepaint while the paste is still "wet. 7

2. The method of concealing minor defects in t a stirface being covered with a flat finish or oil wer .e ess s,i m rsesn i herass re 1 Bimam'fd faridfi e ifi f in n j qver he paste in"-the"dfect"while the paste is {fin mess of 160%180 fori bettrftofa"tlilck1paste, ithn-iliffifiiig h h kjnasi iiie le'f iifip ieot; aiid thereafter painting"ov 'erthepaste in the defect while the pasteis en-wee AI'FRED KOWALL.

.znrsiencesrci ea in the ni er pater-it cni'rnn f STATESTATEN'I'S ,flame Date A l-lojer i -Ndv.- 4,1879 491 993 1Abert etai. ='Jan. 31,. 2893 21353375 :Ehzymas s :Sept. :21, 1 915 "396,986 :Berg Nov. 15, 1921 

1. THE PROCESS OF CONCEALING MINOR DEFECTS IN A SURFACE BEING COVERED WITH A FLAT FINISH OF OIL OR WATER BASE PAINT CONSISTING OF FIRST, COVERING THE DEFECT WITH A THICK PASTE CONSITING OF COMMON GROUND MICA MIXED WITH A SUFFICIENT QUANTITY OF THE PARTICULAR COVERING PAINT, AND THEREAFTER APPLYING THE PAINT WHILE THE PASTE IS STILL WET. 